Patents by Inventor Vernon W. Hartmann

Vernon W. Hartmann has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Corrosion resistant austenitic alloy
    Patent number: 6918967
    Abstract: An austenitic alloy having improved ductility/processability and improved pitting and crevice corrosion resistance comprising, in % by weight, about: 25-30% Ni; 19-23% Cr; 6-8% Mo; 0.3-0.5% N; 0.5% Mn; 0-1.5% Cu; 0-0.2% C; 0-1% Al; 0-0.01% S; 0-1% Ti; 0-1% Si; up to trace amounts of Mg, Ca, and Ce; and balance Fe plus incidental impurities.
    Type: Grant
    Filed: March 8, 2001
    Date of Patent: July 19, 2005
    Assignee: Huntington Alloys Corporation
    Inventors: James R. Crum, Frances S. Suarez, Sarwan K. Mannan, Vernon W. Hartmann
  • Corrosion resistant austenitic alloy
    Publication number: 20040120843
    Abstract: An austenitic alloy having improved ductility/processability and improved pitting and crevice corrosion resistance comprising, in % by weight, about: 25-30% Ni; 19-23% Cr; 6-8% Mo; 0.3-0.5% N; 0.5% Mn; 0-1.5% Cu; 0-0.2% C; 0-1% Al; 0-0.01% S; 0-1% Ti; 0-1% Si; up to trace amounts of Mg, Ca, and Ce; and balance Fe plus incidental impurities.
    Type: Application
    Filed: February 10, 2003
    Publication date: June 24, 2004
    Inventors: James R Crum, Frances Suarez, Sarwan K Mannan, Vernon W Hartmann